\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Holmofy (Hff)}
\pdfinfo{
  /Title (regex.pdf)
  /Creator (Cheatography)
  /Author (Holmofy (Hff))
  /Subject (Regex Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{00A341}
\definecolor{LightBackground}{HTML}{EFF9F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Regex Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Holmofy (Hff)} via \textcolor{DarkBackground}{\uline{cheatography.com/40360/cs/12406/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Holmofy (Hff) \\
  \uline{cheatography.com/hff} \\
        \uline{\seqsplit{www}.hufeifei.cn}
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 2nd August, 2017.\\
   Updated 8th July, 2019.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{1.36 cm} x{6.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{匹配字符}}  \tn
% Row 0
\SetRowColor{LightBackground}
{[}abc{]} & 匹配a,b,c中的任意一个字符 \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{[}\textasciicircum{}abc{]} & 不匹配a,b,c中的所有字符，"\textasciicircum{}"只有作为第一个字符出现才有效 \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{[}a-g{]} & \seqsplit{匹配a-g范围内的任意一个字符} \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
{[}\textasciicircum{}a-g{]} & \seqsplit{不匹配a-g中的所有字符} \tn 
% Row Count 8 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{[}H-N{]} & \seqsplit{匹配H-N范围内的任意一个字符} \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
{[}0-9{]} & \seqsplit{匹配0-9范围内的任意一个字符} \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
{[}a-gH-N{]} & 匹配a-g,H-N范围内的任意一个字符 \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{通配符：} \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
. & {[}\textasciicircum{}\textbackslash{}n\textbackslash{}r{]},匹配非换行符 \tn 
% Row Count 16 (+ 1)
% Row 9
\SetRowColor{white}
\textbackslash{}s & space,空白字符,即换行,制表,空格等字符 \tn 
% Row Count 18 (+ 2)
% Row 10
\SetRowColor{LightBackground}
\textbackslash{}S & {[}\textasciicircum{}\textbackslash{}s{]} \tn 
% Row Count 19 (+ 1)
% Row 11
\SetRowColor{white}
\textbackslash{}d & digit: {[}0-9{]} \tn 
% Row Count 20 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\textbackslash{}D & {[}\textasciicircum{}\textbackslash{}d{]} \tn 
% Row Count 21 (+ 1)
% Row 13
\SetRowColor{white}
\textbackslash{}w & word: {[}0-9A-Za-z\_{]} \tn 
% Row Count 22 (+ 1)
% Row 14
\SetRowColor{LightBackground}
\textbackslash{}W & {[}\textasciicircum{}\textbackslash{}w{]} \tn 
% Row Count 23 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.08 cm} x{3.92 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{匹配组}}  \tn
% Row 0
\SetRowColor{LightBackground}
(a|b) & \seqsplit{匹配a或b并捕获} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
(...) & 捕获组 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
(?:...) & 非捕获组 \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
(?\textless{}name\textgreater{}...)或(?'name'...) & 命名捕获组,name可以自定义 \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{(?(condition)true\_regex|false\_regex)} & 条件匹配 \tn 
% Row Count 8 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{group(0)用于获取整个匹配串的匹配结果，group(\textgreater{}0)则可以从整个匹配串的结果中获取子捕获组。 \newline 注意：java1.7之后才支持命名捕获组（group方法传入字符串name作为参数），js和python暂时还不支持命名捕获组。}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{0.88 cm} x{7.12 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{频次范围}}  \tn
% Row 0
\SetRowColor{LightBackground}
\{3\} & \seqsplit{前面匹配项出现3次},等价于\{3,3\} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\{3,6\} & \seqsplit{前面的匹配项出现3到6次} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\{3,\} & \seqsplit{前面的匹配项至少出现3次} \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\{0,6\} & \seqsplit{前面的匹配项最多出现6次} \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{通配符：} \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
* & \{0,\} \tn 
% Row Count 9 (+ 1)
% Row 6
\SetRowColor{LightBackground}
+ & \{1,\} \tn 
% Row Count 10 (+ 1)
% Row 7
\SetRowColor{white}
? & \{0,1\} \tn 
% Row Count 11 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\textbackslash{}w* & 贪婪模式 \tn 
% Row Count 12 (+ 1)
% Row 9
\SetRowColor{white}
\textbackslash{}w*? & 非贪婪模式 \tn 
% Row Count 13 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.6 cm} x{6.4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{定点符}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textasciicircum{} & 字符串开始符 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\$ & 字符串结尾符 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}b & boundary,单词边界 \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}B & 非单词边界 \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{定点断言} \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
(?=exp) & \seqsplit{向后肯定断言(exp后缀)} \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
(?\textless{}=exp) & \seqsplit{向前肯定断言(exp前缀)} \tn 
% Row Count 8 (+ 2)
% Row 7
\SetRowColor{white}
(?!exp) & \seqsplit{向后否定断言(没有exp后缀)} \tn 
% Row Count 10 (+ 2)
% Row 8
\SetRowColor{LightBackground}
(?\textless{}!exp) & \seqsplit{向前否定断言(没有exp前缀)} \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\textbackslash{}b(\textbackslash{}w+)\textbackslash{}b等价于(?\textless{}=\textbackslash{}W?)(\textbackslash{}w+)(?=\textbackslash{}W?)}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}